Draining The Oceans Is HARD

Quick Overview

Draining the oceans is incredibly difficult and largely impossible due to the Earth's spherical shape and the complex, interconnected nature of the ocean floor. While simple 2D models can be drained, real oceans have topography and features that prevent complete drainage, trapping water in many areas. Instead, simulating ocean drainage involves understanding how water levels would rise and inundate landmasses based on elevation data.

Key Points: Draining all the Earth's oceans is practically impossible because the planet is a sphere, not a flat plane, and the ocean floor has complex topography with many low-lying areas that would retain water. In a 2D model, 'draining' is achieved by removing water below a certain threshold, which is straightforward. However, in 3D, water will always find paths to fill depressions, creating 'landlocked seas' or basins. The concept of 'drainage' in 3D means water will flow downhill to the lowest point, and unless that point is completely sealed off, it will eventually reach the drain. If the water level is lower than the surrounding terrain, it will drain. However, the video illustrates that even if one were to attempt to drain the oceans, many areas would become 'landlocked seas' because the water would be trapped by higher elevations. The video uses a 'paint bucket' analogy from image editing software to explain how filling or draining areas works based on thresholds, which is analogous to water levels in topography. Determining whether a point is 'underwater' or not depends on comparing its elevation to the water level, and in real-world scenarios, the complexity of ocean floor topography makes complete drainage infeasible.

Context: The video explores the hypothetical scenario of draining the Earth's oceans, contrasting simple 2D models with the complex reality of 3D topography. It uses visual analogies, like filling areas in image editing software, to explain how water behaves in relation to elevation and the concept of 'landlocked seas'. The core idea is to illustrate why complete ocean drainage is an impossible task due to the Earth's spherical shape and the intricate nature of the ocean floor.